
Quest® (Moxidectin) is an FDA-approved preparation containing Moxidectin, for veterinary use. Available by prescription.
Moxidectin, commercially available as Quest®, is a macrocyclic lactone anthelmintic utilized for equine parasite management. It is a prescription oral gel available for use in horses, requiring professional guidance from a licensed veterinarian. It is frequently considered in the context of parasite management for patients presented with a risk of large and small strongyles, encysted cyathostomes and bots.
The actions described here reflect the product's FDA-approved labeling; your veterinarian determines the appropriate use for your animal.
Prescription only. Use only under the direction of a licensed veterinarian. This information is not a substitute for veterinary diagnosis, prescribing or monitoring.
At a pharmacological level, it is used in the context of managing the nervous system of specific invertebrates by opening glutamate-gated chloride channels. Commonly observed effects are rare but may include localized digestive changes or temporary behavioral shifts. Because it is highly potent, it is important to accurately estimate the horse's weight before administration to manage the risk of sensitivity. Owners should monitor for any unusual coordination changes and contact their veterinarian promptly with any concerns.
Yes. Quest® is a prescription medication and requires a valid authorization from a licensed veterinarian. Mixlab verifies all legal requirements before dispensing.
Veterinarians discuss Quest® because it is used in the context of managing encysted small strongyles (cyathostomes) in a single dose. This offers an approach to managing specific parasite life stages that other medications may not address.
Your veterinarian will determine the necessary frequency based on fecal egg count results and your local environment. It is designed for strategic, situational management.
Quest® is typically avoided in foals under six months and in underweight or debilitated horses. Your veterinarian will determine if this management approach is appropriate for your animal.
Overdosing may lead to neurological observational signs like staggering or depression. If you suspect an accidental overdose, contact your veterinarian immediately for a clinical review.




